Yes, Raiders, Broncos and Bengals come to mind, and Falcons IIRC, and a few other teams... Vikings, Seahawks...They all had the ribbon, though.Every team had to choose one week for this "salute to service" thing, maybe there's a connection.The Raiders are adding the decals this week, I think. There's a photo of an helmet in their facebook page showing one of the five decals.

IRVING, Texas – The Cowboys will wear a No. 53 decal on their helmets to honor the memory of linebacker Jerry Brown for the rest of the season, starting with Sunday’s game against Pittsburgh at Cowboys Stadium.

The Cowboys will also have a moment of silence before the game to remember Brown. The NFL has asked teams to hold a moment of silence for the victim’s of Friday’s school shooting in Connecticut.